The 4ARM STRONG is a self-therapy device designed to help improve overall forearm function and reduce pain and inflammation caused by several elbow and wrist ailments. It does this by improving the effectiveness of forearm stretch through active release, a powerful form of soft-tissue therapy. Trusted by top-level athletes in several grip-intensive sports, the 4ARM STRONG can help you elevate your overall performance, AND it can help relieve pain and fatigue from repetitive manual tasks ranging from typing, to construction, to surgery. As with any self-therapy device, it's important to follow all instructions and recommended uses.